Share-Based Compensation Plans - Company's stock option activity (Details) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2025 USD ($) $ / shares shares
Share-Based Compensation Plans
Market value of common stock (in dollars per share)	$ 33.16
Employee Stock Option
Share-Based Compensation Plans
Shares, Outstanding at beginning of period | shares	563,760
Shares, Exercised | shares	(3,020)
Shares, Forfeited or expired | shares	(1,370)
Shares, Outstanding at end of period | shares	559,370
Shares, Exercisable at end of period | shares	285,329
Weighted Average Exercise Price, Outstanding at beginning of period (in dollars per share)	$ 25.98
Weighted Average Exercise Price, Exercised (in dollars per share)	24.84
Weighted Average Exercise Price, Forfeited or expired (in dollars per share)	25.34
Weighted Average Exercise Price, Outstanding at end of period (in dollars per share)	25.99
Weighted Average Exercise Price, Exercisable at end of period (in dollars per share)	$ 26.5
Weighted Average Remaining Contractual Term (Years), Outstanding	6 years
Weighted Average Remaining Contractual Term (Years), Exercisable, Outstanding	4 years 10 months 24 days
Aggregate Intrinsic Value, Outstanding | $	$ 4,261
Aggregate Intrinsic Value, Exercisable | $	$ 2,151